Kapasitor
Kapasitor atau kondensator, suatu piranti elektronika yang sifatnya dapat menyimpan tenaga listrik selama kurun waktu yang ditentukan. kapasitor memliki dua plat (logam) sejajar atau disebut keping sejajar.
kapasitansi
satuan dari kapasitor adalah farad
kapasitansi dari kondensator ditentukan dengan rumus
|
Material
|
Dielectric Constant
- εr - |
|
Acetaldehyde (41° F)
|
21.8
|
|
Acetic Acid (68° F)
|
6.2
|
|
Acetic Acid (36° F)
|
4.1
|
|
Acetone (77° F)
|
20.7
|
|
Acetone (127° F)
|
17.7
|
|
Acetone (32° F)
|
1.0159
|
|
Acetyl Acetone (68° F)
|
23.1
|
|
Acetyl Bromide (68° F)
|
16.5
|
|
Acetyl Chloride (68° F)
|
15.8
|
|
Acetyle Acetone (68° F)
|
25.0
|
|
Acetylene (32° F)
|
1.0217
|
|
Air (Dry) (68° F)
|
1.000536
|
|
Air, Liquid (-191oC)
|
1.4
|
|
Alcohol, Industrial
|
16-31
|
|
Alumina
|
9.3-11.5
|
|
Aluminum Bromide (212° F)
|
3.4
|
|
Aluminum Fluoride
|
2.2
|
|
Amber
|
2.8-2.9
|
|
Ammonia (-74° F)
|
25
|
|
Ammonia (-30° F)
|
22.0
|
|
Ammonia (40° F)
|
18.9
|
|
Ammonia (69° F)
|
16.5
|
|
Aniline (32° F)
|
7.8
|
|
Aniline (68° F)
|
7.3
|
|
Aniline (212° F)
|
5.5
|
|
Araldite
|
3.6
|
|
Argon (68° F)
|
1.000513
|
|
Bakelite
|
3.5-5.0
|
|
Benzene (68° F)
|
2.3
|
|
Butane (30° F)
|
1.4
|
|
Carbondioxide (68° F)
|
1.000921
|
|
Calcium
|
3.0
|
|
Casting compound
|
2.5
|
|
Caster oil
|
4.7
|
|
Ceramic, MgNb2O6
|
21
|
|
Ceramic, ZnNb2O6
|
25
|
|
Ceramic, MgTa2O6
|
28
|
|
Ceramic, ZnTa2O6
|
38
|
|
Chlorine (32° F)
|
2.0
|
|
Chloroform (68° F)
|
4.8
|
|
Ebonite
|
2.5-2.9
|
|
Epoxy Resin (Cast )
|
3.6
|
|
Ethanol (77° F)
|
24.3
|
|
Ethyl Acetate (77° F)
|
6.0
|
|
Ethyl Alcohol (77° F)
|
24.3
|
|
R12
Dichlorodifluoromethane (70° F)
|
2.4
|
|
Glass
|
3.7 - 10
|
|
Glycerin, Liquid
|
47-68
|
|
Glycerol (77° F)
|
42.5
|
|
Granite
|
7 - 9
|
|
Guttapercha
|
4
|
|
Hard paper, laminated
|
4.5
|
|
Ice (-2oC)
|
3.2
|
|
Isoprene (77° F)
|
2.1
|
|
Insulation of high voltage cables
|
4.2
|
|
Insulation of telephone cables
|
1.5
|
|
Marble
|
8
|
|
Mica
|
2.5 - 7
|
|
Mineral Oil (80° F)
|
2.1
|
|
Nitrogen (68° F)
|
1.000580
|
|
Nylon
|
4.0 - 5.0
|
|
Oil paper
|
4
|
|
Olive oil
|
3
|
|
Paper
|
2.3
|
|
Paper, impregnated
|
5
|
|
Paper, waxed
|
2.5
|
|
Paraffin oil
|
2.2
|
|
Paraffin Wax
|
2.1-2.5
|
|
Petroleum
|
2.2
|
|
Phenolic resin
|
8
|
|
Plexiglass
|
3.2
|
|
Polyester Resin
|
2.8 - 4.5
|
|
Polyethylene
|
2.2-2.4
|
|
Polyamide
|
2.8
|
|
Polypropylene
|
2.2
|
|
Polystyrene
|
3
|
|
Porcelain
|
5.0-7.0
|
|
Pressed board
|
4
|
|
Pyrex Glass
|
4.3 - 5.0
|
|
Quartz
|
4.5
|
|
Rubber
|
3.0
|
|
Salt
|
3.0 - 15.0
|
|
Shellac
|
3.5
|
|
Silica Sand
|
2.5-3.5
|
|
Silicon
|
11.0 - 12.0
|
|
Slate
|
4
|
|
Soft rubber
|
2.5
|
|
Steatite
|
6
|
|
Sulfur
|
3.5
|
|
Polytetrafluoroethylene (PTFE)
|
2
|
|
Transformer oil, mineral
|
2.2
|
|
Transformer oil, vegetable
|
2.5
|
|
Turpentine
|
2.2
|
|
Vulcanized fibres
|
2.5
|
|
Water
|
4 - 88
|
|
Wood, Dry
|
2-6
|
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